M 6.1 earthquake: Aleutian Islands (Atka, USA) — April 18, 1956

M 6.1 earthquake: Aleutian Islands (Atka, USA) — April 18, 1956. Epicenter 231 km W of Atka, depth 45 km, 00:00 Local (1956-04-18 11:00 UTC). Shaking felt by ~61 people. Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (231 km W of Atka, USA) — 51.662, -177.449

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